what is temperature?

Answer 1

In thermodynamics, temperature is a measure of the tendency of an object or system to spontaneously give up energy. Temperature is a physical property of a system that underlies the common notions of "hot" and "cold", in which something that is hotter has the greater temperature. Temperature arises from the random microscopic motions of matter, where temperature is related to the average energy of these microscopic motions. The concept of temperature, defined as a tension associated with entropy, follows from the zeroth law of thermodynamics.

Temperature is measured with thermometers that may be calibrated to a variety of temperature scales. Throughout the world (except for the U.S.), the Celsius scale is used for most temperature measuring purposes. The entire scientific world (the U.S. included) measures temperature in kelvins on the thermodynamic (absolute) temperature scale and in Celsius. Many engineering fields in the U.S., especially high-tech ones, also use the kelvin and Celsius scales. The bulk of the U.S. however, (its lay people, industry, meteorology, and government) relies upon the Fahrenheit scale. Other engineering fields in the U.S. also rely upon the Rankine scale when working in thermodynamic-related disciplines such as combustion.

Answer 2

What is Temperature?
In a qualitative manner, we can describe the temperature of an object as that which determines the sensation of warmth or coldness felt from contact with it.
It is easy to demonstrate that when two objectsof the same material are placed together (physicists say when they are put in thermal contact), the object with the higher temperature cools while the cooler object becomes warmer until a point is reached after which no more change occurs, and to our senses, they feel the same. When the thermal changes have stopped, we say that the two objects (physicists define them more rigorously as systems) are in thermal equilibrium . We can then define the temperature of the system by saying that the temperature is that quantity which is the same for both systems when they are in thermal equilibrium.

If we experiment further with more than two systems, we find that many systems can be brought into thermal equilibrium with each other; thermal equilibrium does not depend on the kind of object used. Put more precisely,

if two systems are separately in thermal equilibrium with a third, then they must also be in thermal equilibrium with each other,

and they all have the same temperature regardless of the kind of systems they are.

The statement in italics, called the zeroth law of thermodynamics may be restated as follows:

If three or more systems are in thermal contact with each other and all in equilibrium together, then any two taken separately are in equilibrium with one another.
Now one of the three systems could be an instrument calibrated to measure the temperature - i.e. a thermometer. When a calibrated thermometer is put in thermal contact with a system and reaches thermal equilibrium, we then have a quantitative measure of the temperature of the system. For example, a mercury-in-glass clinical thermometer is put under the tongue of a patient and allowed to reach thermal equilibrium in the patient's mouth - we then see by how much the silvery mercury has expanded in the stem and read the scale of the thermometer to find the patient's temperature.


hope this helps u out and good luck

Answer 3

The short answer is that temperature is a relative measure of the speed of molecular motion (which includes translation, vibration, and rotation). The more motion, the higher (and hotter) the temperature.

Answer 4

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Answer 5

Temperature is the degree of heat.

Heat is the energy molecules have which is stored in different types of motion. So ultimately it is a measure of the movement and activity of molecules.

Answer 6

Temperature, is precisely, the increase or decrease of heat.

Answer 7

The average measure of the amount of heat present in a given object on a given time.

Answer 8

Temperature is the speed at which atoms in a particular body are vibrating. if in the object the atoms are vibrating much faster than the atoms in our body then we feel warm whereas if the atoms in a particular body are vibrating slower than the atoms in our body we feel cold.

Answer 9

The degree of hotness or coldness of a body.It also determines the average kinetic energy of a body.

Answer 10

a optimum temperatue to keep your body metabolisme going